Month: October 2017

Graduate Seminar, 23rd October

Speaker: Oleksandr Kovalenko

Title: “Chiral magnetic effect in nucleus-nucleus collisions at LHC energies”.

Abstract: The chiral magnetic effect (charge separation in strong magnetic field) is of great importance for QCD studies as it is a direct consequence of parity violation. Main observables and collision parameters that are used in ultra relativistic heavy ion physics will be presented. The most recent results on the Chiral Magnetic Effect in nucleus-nucleus collisions will be reviewed.

Graduate Seminar, 16th October

Speaker: Erik Kofoed

Title: Chiral Perturbation Theory for Neutron-antineutron Oscillations

Abstract: Neutron-antineutron oscillations is a possible consequence of baryon number violating physics. Transition matrix elements for oscillations can be calculated numerically, up to an overall scale, with lattice simulations. Such simulations contain artefacts such as choice of unphysical pion masses and finite volume effects. In order to estimate the impact of these artefacts we compute the matrix element in Chiral Perturbation Theory in both infinite and finite volume and at a variable pion mass.

Graduate Seminar, 9th October

Speaker:  Artem Poliszczuk

Title: Fuzzy support vector machine application to data mining in sky surveys.

Abstract: The first application of the fuzzy support vector machine (FSVM) algorithm as the automated classification tool for astronomical catalogs will be presented. This new approach allows to perform a more trustable classification of astronomical sources by making use of the measurement uncertainties. The performance of different versions of the SVM algorithm is examined on the AKARI-NEP data and the resultant catalog of infrared-selected galaxies is presented.